CN101706267A - Indexing mechanism with large diameter, small angle and high precision - Google Patents

Indexing mechanism with large diameter, small angle and high precision Download PDF

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Publication number
CN101706267A
CN101706267A CN200910310633A CN200910310633A CN101706267A CN 101706267 A CN101706267 A CN 101706267A CN 200910310633 A CN200910310633 A CN 200910310633A CN 200910310633 A CN200910310633 A CN 200910310633A CN 101706267 A CN101706267 A CN 101706267A
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China
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guide rail
large diameter
arc guide
small angle
high precision
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CN200910310633A
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CN101706267B (en
Inventor
范华献
尹健
陈昌金
刘玲
龚运环
陈波
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Mianyang Weibo Electronic Co Ltd
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No58 Institute Of China North Industries Group Corp
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Abstract

The invention belongs to the technical field of a displacement measuring device, and particularly relates to an indexing mechanism with large diameter, small angle and high precision. The invention can be used for a displacement measuring device of an air turbine experimental platform. The indexing mechanism with large diameter, small angle and high precision comprises a rotary base, an arc guide rail, an arc guide rail movable block, a bracket, a swinging rod, a slide block, a planker, a linear guide rail, a ball screw rod pair, an elastic coupler and a servo motor. A rectilinear motion is converted into a circular motion by using the arc guide rail, and the high precise ball screw rod pair is used for doing the rectilinear motion so as to indirectly measure the angle variation within the range of the large diameter and the small angle. In the invention, the indexing mechanism with large diameter, small angle and high precision has low cost and good reliability, and is applicable to detecting apparatuses with the large diameter, the small indexing angle and the high requirement of the indexing precision.

Description

A kind of indexing mechanism with large diameter, small angle and high precision
Technical field
The invention belongs to the displacement measuring device technical field, be specifically related to a kind of indexing mechanism with large diameter, small angle and high precision, the present invention can be used for air turbine experiment porch Displacement Measurement device.
Background technology
Usually the major diameter indexing mechanism adopts the structure of worm gear, worm screw or gear, and this structure transmission efficiency and indexing accuracy are lower.Air turbine experiment porch Displacement Measurement device need carry out high-accuracy calibration on large diameter cylinder, the indexing accuracy of specific requirement is ± 5 seconds.Therefore major diameter indexing mechanism commonly used is difficult to use on air turbine experiment porch Displacement Measurement device.
Summary of the invention
For solving the problem that major diameter indexing mechanism precision commonly used is general, be difficult to realize the high-accuracy calibration of air turbine experiment porch Displacement Measurement device, the invention provides a kind of indexing mechanism with large diameter, small angle and high precision.
Indexing mechanism with large diameter, small angle and high precision of the present invention comprises: revolving bed, arc guide rail, arc guide rail motion block, support, fork, slide block, planker, line slideway, ball screw assembly,, spring coupling, servomotor.
The annexation of described indexing mechanism with large diameter, small angle and high precision is: arc guide rail is fixed on the revolving bed; The arc guide rail motion block is fixed on the fork, and fork can be done gyration around the center of circle of arc guide rail; Support is fixed on the revolving bed; Fork and slide block be for being slidingly connected, and fork and slide block rotate around planker when motion; Slide block is connected with planker; Planker is connected by line slideway with support; Ball screw assembly, is rack-mount; Servomotor is rack-mount, and servomotor is connected by spring coupling with ball screw assembly.
Described arc guide rail is provided with the arc guide rail motion block that is used for circular motion.
Described ball screw assembly, be used for straight-line slide block, planker is connected.
Described arc guide rail is provided with the arc guide rail motion block that is used for circular motion; Described ball screw assembly, be used for straight-line slide block, planker is connected; The arc guide rail motion block is connected by fork with slide block.
The course of work of described indexing mechanism with large diameter, small angle and high precision is: servomotor drives the ball-screw rotation, promote planker along the line slideway moving linearly, the rectilinear motion of planker drives slide block and fork is made circular motion along arc guide rail, realizes the large diameter, small angle and high precision calibration.
Indexing mechanism with large diameter, small angle and high precision of the present invention through application verification, has solved low, the problems such as indexing accuracy is low, complex structure, Installation and Debugging difficulty of major diameter indexing mechanism transmission efficiency commonly used.And have following characteristics: use arc guide rail that rectilinear motion is converted to circular motion Δ θ, measure the diameter d that diameter only is subject to arc guide rail in theory; Use high-accuracy ball screw assembly, moving linearly Δ L, the stroke L that takes measurement of an angle in theory and only be subject to roller screw pair; Therefore, the angle of measuring after revising according to support height H is: Δ θ=arcsin (2 * Δ L/ (d+H)), when the diameter d of arc guide rail and support height H are very big, L is relatively very little for ball screw assembly, moving linearly Δ, be easier to realize circular motion in small angle range, Δ θ reaches very high precision.
Description of drawings
Fig. 1 is the front elevation of indexing mechanism with large diameter, small angle and high precision of the present invention
Fig. 2 is the side view of indexing mechanism with large diameter, small angle and high precision of the present invention
Among the figure, 1. motion block 4. supports 5. forks 6. slide blocks 7. plankers 8. line slideways 9. ball screw assembly,s 10. spring couplings 11. servomotors of revolving bed 2. arc guide rails 3. arc guide rails
Embodiment
The present invention is described further below in conjunction with drawings and Examples.
Fig. 1 is the front elevation of indexing mechanism with large diameter, small angle and high precision of the present invention, and Fig. 2 is the side view of indexing mechanism with large diameter, small angle and high precision of the present invention.
Indexing mechanism with large diameter, small angle and high precision of the present invention is implemented on air turbine experiment porch Displacement Measurement device.
Know by Fig. 1,2, the present invention includes revolving bed 1, arc guide rail 2, arc guide rail motion block 3, support 4, fork 5, slide block 6, planker 7, line slideway 8, ball screw assembly, 9, spring coupling 10, servomotor 11.
Indexing mechanism with large diameter, small angle and high precision annexation of the present invention is: arc guide rail 2 is fixed on the revolving bed 1; Arc guide rail motion block 3 is fixed on the fork 5, and support 4 is fixed on the revolving bed 1; Fork 5 and slide block 6 are for being slidingly connected; Slide block 6 rotates on planker 7, and planker 7 is connected by line slideway 8 with support 4; Ball screw assembly, 9 is installed on the support 4; Servomotor 11 is connected with support 4, and servomotor 11 is connected by spring coupling 10 with ball screw assembly, 9.
The indexing mechanism with large diameter, small angle and high precision course of work of the present invention is as follows:
Revolving bed 1 provides the support of whole device;
Control system input calibration signal is to AC servo motor 11;
AC servo motor 11 input calibration power are to ball screw assembly, 9;
Ball screw assembly, 9 drives planker 7 and slide block 6 moving linearlies;
Planker 7 drives slide block 6 and fork 4 is done gyration along arc guide rail 2, finishes dividing movement;
Indexing mechanism with large diameter, small angle and high precision of the present invention has following characteristics: the motor of employing is an AC servo motor, provides feedback information by scrambler, realizes half-closed loop control, has improved the indexing accuracy of this mechanism; Use the motor of band band-type brake to prevent at the power failure state draft link because the change of the effect occurrence positions of gravity; Adopt the high-accuracy ball screw assembly, of P3 level, make straight-line error as far as possible little; On the air turbine experiment porch Displacement Measurement device of practical application, the measurement diameter is 1380mm, and when the leading screw positioning error was 0.006mm, the error that is reacted on the calibration was 1 second; Adopt the accurate circular arc rolling guide of R form height can obtain gapless high-accuracy circular motion.
Can realize the present invention according to the embodiment that the present invention announced, but enforcement of the present invention is not limited only to above embodiment, as substituting drive unit of the present invention to realize the present invention by other functionally similar drive units of employing.

Claims (4)

1. an indexing mechanism with large diameter, small angle and high precision is characterized in that: contain revolving bed (1), arc guide rail (2), arc guide rail motion block (3), support (4), fork (5), slide block (6), planker (7), line slideway (8), ball screw assembly, (9), spring coupling (10), servomotor (11);
Described arc guide rail (2) is fixed on the revolving bed (1); Arc guide rail motion block (3) is fixed on the fork (5), and support (4) is fixed on the revolving bed (1); Fork (5) and slide block (6) are for being slidingly connected; Slide block (6) is gone up rotation at planker (7), and planker (7) is connected by line slideway (8) with support (4); Ball screw assembly, (9) is installed on the support (4); Servomotor (11) is connected with support (4), and servomotor (11) is connected by spring coupling (10) with ball screw assembly, (9).
2. a kind of indexing mechanism with large diameter, small angle and high precision according to claim 1 is characterized in that: described arc guide rail (2) is provided with the arc guide rail motion block (3) that is used for circular motion.
3. a kind of indexing mechanism with large diameter, small angle and high precision according to claim 1 is characterized in that: described ball screw assembly, (9) be used for straight-line slide block (6), planker (7) is connected.
4. a kind of indexing mechanism with large diameter, small angle and high precision according to claim 1 is characterized in that: described arc guide rail (2) is provided with the arc guide rail motion block (3) that is used for circular motion; Described ball screw assembly, (9) be used for straight-line slide block (6), planker (7) is connected; Arc guide rail motion block (3) is connected by fork (5) with slide block (6).
CN2009103106331A 2009-11-30 2009-11-30 Indexing mechanism with large diameter, small angle and high precision Active CN101706267B (en)

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Application Number Priority Date Filing Date Title
CN2009103106331A CN101706267B (en) 2009-11-30 2009-11-30 Indexing mechanism with large diameter, small angle and high precision

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CN101706267A true CN101706267A (en) 2010-05-12
CN101706267B CN101706267B (en) 2011-01-26

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014380A (en) * 2014-04-30 2015-11-04 盐城市宝利来精密机械制造有限公司 Automatic boring and milling integrated machine tool
CN105276116A (en) * 2015-12-04 2016-01-27 成都普瑞斯数控机床有限公司 Zero-clearance arc swing mechanism based on machine tool and implementation method thereof
CN106289788A (en) * 2016-09-29 2017-01-04 绵阳市维博电子有限责任公司 A kind of air turbine testing stand probe positioning device and error compensating method thereof
CN106938406A (en) * 2016-01-04 2017-07-11 杭州航验环境技术有限公司 A kind of circular index device and grading method
CN107030525A (en) * 2017-06-12 2017-08-11 周高群 Collect ball screw automatic dividing attachment integrated with gear and rack
CN109152194A (en) * 2018-09-29 2019-01-04 中国原子能科学研究院 A kind of bevatron removes the localization method of target telecontrol equipment and removing target
CN114508572A (en) * 2022-01-24 2022-05-17 浙江陀曼数字技术有限公司 Control method and device for rotating shaft of nonlinear transmission structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919474C3 (en) * 1968-05-03 1975-09-18 G. Billi & C. S.P.A., Florenz (Italien) Thread guide for a knitting machine with several thread feeds
GB0418278D0 (en) * 2004-08-16 2004-09-15 Glaxo Group Ltd Medicament dispenser
CN201291392Y (en) * 2008-10-15 2009-08-19 中国第一汽车集团公司 Mechanical indexing mechanism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014380A (en) * 2014-04-30 2015-11-04 盐城市宝利来精密机械制造有限公司 Automatic boring and milling integrated machine tool
CN105276116A (en) * 2015-12-04 2016-01-27 成都普瑞斯数控机床有限公司 Zero-clearance arc swing mechanism based on machine tool and implementation method thereof
CN105276116B (en) * 2015-12-04 2018-05-08 成都普瑞斯数控机床有限公司 A kind of gapless arc swing mechanism and its implementation based on lathe
CN106938406A (en) * 2016-01-04 2017-07-11 杭州航验环境技术有限公司 A kind of circular index device and grading method
CN106289788A (en) * 2016-09-29 2017-01-04 绵阳市维博电子有限责任公司 A kind of air turbine testing stand probe positioning device and error compensating method thereof
CN107030525A (en) * 2017-06-12 2017-08-11 周高群 Collect ball screw automatic dividing attachment integrated with gear and rack
CN109152194A (en) * 2018-09-29 2019-01-04 中国原子能科学研究院 A kind of bevatron removes the localization method of target telecontrol equipment and removing target
CN114508572A (en) * 2022-01-24 2022-05-17 浙江陀曼数字技术有限公司 Control method and device for rotating shaft of nonlinear transmission structure

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